Combination of PebblesPaving bricks (Harpenden, AL5)

Hi, I'm iin need of a combination of pebbles/gravel of any colour size and/or roughly 300-500 (rough guess) clean, (no cement left on if possible), of paving bricks please, of any colour/design, as long as what they are, will fit together to make a flat space/walkable area. To cover Length 5m x 2m width area.

If the whole area were to be covered purely with paving bricks, at a guess, we'd need roughly 500. But if gravel/pebbles were either side, the bricks could make a type of pathway of roughly 1m w x 3m L.

*Thanks very much in advance.*